Imaging science, Video, Photography, and more...

Field of view calculator iPhone App

This is a handy little app that will allow you to calculate what lens is needed to achieve a particular field of view. This is particularly useful when you know how far away the subject is and what screen height you need, the calculator will then allow you to slect a suitable combination of lens and sensor size.

The screen height descriptors are those used in the UK CCTV / law enforcement communities but the equivalent heights in meters is also included. A screen shot of the app is shown below.

Currently the app is only available for the iPhone but further variations may be considered if requested.

To register a request for a different platform or for technical support please email ken@maclennan-imaging.com.

Date and Time offset calculator iPhone App

This app is now available on the App Store. The app is ideal for those who need to access data stored on time indexed machines such as CCTV DVRs. Having entered the time shown on the system and the current time the app will then generate the corrected time required in order to access the relevant data.

It is intended that Mac and PC versions of this app will be available shortly.

Battery Life calculator iPhone App

This is a handy app to calculate how often the battery powering equipment needs to be changed. There is capacity for including up to four devices, a user customisable safety factor and optionally the ability to take into account ambient temperature. Selecting area and month will automatically add the relevant data into the main calculation screen and a map is included to illustrate the areas named.